Description
Product Specification S4Cplus M2000/BaseWare OS 4.0 11
1.4 Memory
Available memory
The controller has two different memories:
- a fixed DRAM memory of size 32 MB, used as working memory
- a flash disk memory, standard 64 MB, used as mass memory. Optional 128 MB.
The DRAM memory is used for running the system software and the user programs and
it is thus divided into three areas:
- system software
- system software execution data
- user RAPID programs, about 5.5 MB, see Figure 6 (when installing different
options, the user program memory will decrease, at most by about 0.7 MB).
The flash disk is divided into four main areas:
- a base area of 5 MB, with permanent code for booting
- a release area of 20 MB, where all the code for a specific release is stored
- a system specific data area of 10 MB, where all the run time specific data
including the user program for a system is stored at backup
- a user mass memory area which can be used for storing RAPID programs, data,
logs etc.
The flash disk is used for backup, i.e. when a power failure occurs or at power off, all
the system specific data including the user program, see Figure 6, will be stored on the
flash disk and restored at power on. A backup power system (UPS) ensures the
automatic storage function.
Figure 6 Available memory.
DRAM memory
32 MB
Flash disk memory
64/128 MB
Boot 5 MB
Release storage
20 MB
System data and
user program
10 MB
Mass memory area
available for
System
soft ware
Data
User RAPID
program 5.5 MB
the user
Power on -
restore
Power
off -
store
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